On the Mark Donohue Performance Products items, yes, they came along with something between a pamphlet and a catalog. There were also Racemark and Fypro items noted and offered. I just haven't been able to find the literature yet.

Note the checkered "d" patch on the fire suit Mark Donohue is wearing in this picture taken in the paddock of the 1971 Sebring Continental race (Formula A/Formula 5000). It's the same, or very similar to the patch I posted yesterday.